Correct option is A
Paramagnetic materials are weakly attracted to magnetic fields and have a permanent magnetic moment. They have unpaired electrons that realign in response to an external magnetic field. When the external field is removed, the material loses its magnetism.
Tantalum is an example of a paramagnetic material. Paramagnetic materials are those that are weakly attracted to an external magnetic field and have a positive magnetic susceptibility. These materials have unpaired electrons that align with the magnetic field, but the magnetization disappears once the external field is removed. In contrast, materials like gold, copper, and silver are diamagnetic, meaning they are weakly repelled by a magnetic field.